@ExtendWith(MockitoExtension.class)
class CredentialsInternalTest {

    @Mock
    CIFSContext mockContext;

    /**
     * Simple in-test implementation of CredentialsInternal to exercise the API surface.
     * It validates inputs, records calls, and delegates some behavior to collaborators
     * so we can verify interactions.
     */
    static class TestCredentials implements CredentialsInternal {
        private final String domain;

			instanceType, bucketName, err)
	}

	// ExecObjectLayerAPIAnonTest - Calls the HTTP API handler using the anonymous request, validates the ErrAccessDeniedResponse,
	// sets the bucket policy using the policy statement generated from `getWriteOnlyObjectStatement` so that the
	// unsigned request goes through and its validated again.

        // This test validates integration patterns without requiring real cluster

        // Simulate witness service discovery
        InetAddress mockWitnessAddress = InetAddress.getByName("127.0.0.1");

        // Test witness client initialization patterns
        assertDoesNotThrow(() -> {
            // Validate that witness client configuration is properly set up

	if err != nil {
		return c, err
	}

	for _, cfgName := range openIDTargets {
		getCfgVal := func(cfgParam string) string {
			// As parameters are already validated, we skip checking
			// if the config param was found.
			val, _, _ := s.ResolveConfigParam(config.IdentityOpenIDSubSys, cfgName, cfgParam, false)
			return val
		}

     */
    protected void write(final String path, final byte[] data) {
        validateFilePath(path);
        LdiFileUtil.write(path, data);
    }

    /**
     * Validates the file path.
     *
     * @param path the file path to validate
     */
    protected void validateFilePath(final String path) {
        if (StringUtil.isBlank(path)) {
            throw new IllegalArgumentException("File path cannot be blank.");

	return strings.HasPrefix(r.URL.Path, kmsPathPrefix)
}

// Supported Amz date headers.
var amzDateHeaders = []string{
	// Do not change this order, x-amz-date value should be
	// validated first.
	"x-amz-date",
	"date",
}

// parseAmzDateHeader - parses supported amz date headers, in
// supported amz date formats.
func parseAmzDateHeader(req *http.Request) (time.Time, APIErrorCode) {

			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}
		return
	}
}

// listObjectsV2InArchive generates S3 listing result ListObjectsV2Info from zip file, all parameters are already validated by the caller.
func listObjectsV2InArchive(ctx context.Context, objectAPI ObjectLayer, bucket, prefix, token, delimiter string, maxKeys int, startAfter string, h http.Header) (ListObjectsV2Info, error) {

			ssParity, minParityDrives)
	}

	if ssParity > setDriveCount/2 {
		return fmt.Errorf("parity %d should be less than or equal to %d", ssParity, setDriveCount/2)
	}

	return nil
}

// Validates the parity drives.
func validateParity(ssParity, rrsParity, setDriveCount int) (err error) {
	// SS parity drives should be greater than or equal to minParityDrives.
	// Parity below minParityDrives is not supported.

		urlStr     string
		shouldPass bool
	}{
		{"", false},
		{":", false},
		{"http://localhost/", true},
		{"http://127.0.0.1/", true},
		{"proto://myhostname/path", true},
	}

	// Validates fetching local address.
	for i, testCase := range testCases {
		_, err := checkURL(testCase.urlStr)
		if testCase.shouldPass && err != nil {
			t.Errorf("Test %d: expected to pass but got an error: %v\n", i+1, err)
		}

			t.Errorf("Test %d: Expected the result to `%v`, but instead got `%v`", i+1, testCase.expectedResult, actualResult)
		}
	}
}

// TestIsRequestPresignedSignatureV4 - Test validates the logic for presign signature version v4 detection.
func TestIsRequestPresignedSignatureV4(t *testing.T) {
	testCases := []struct {
		inputQueryKey   string
		inputQueryValue string
		expectedResult  bool
	}{